EP 2528292 A3 20140312 - Radio transmitter system and method
Title (en)
Radio transmitter system and method
Title (de)
Funksendersystem und -verfahren
Title (fr)
Système et procédé de transmetteur radio
Publication
Application
Priority
US 201113114392 A 20110524
Abstract (en)
[origin: EP2528292A2] A radio transmitter system responsive to a binary signal drives a narrow bandwidth VLF or LF antenna. A generator derives a first variable frequency wave frequency coded based on bit values of a binary signal. An arbitrary impulse response signal processor responsive to the first wave derives a first output signal having real and imaginary components representing the shape of a modulating wave having a variable amplitude envelope and the frequency of the coded values. A transmitter responsive to the processor output signal and a VLF or LF carrier supplies the antenna with another output signal including a modulation wave having a shape that is a substantial replica of the modulating wave shape. The processor causes the signal emitted by the antenna system to include modulation having a shape that is substantially the shape of the first wave.
IPC 8 full level
H04L 27/12 (2006.01); H04L 25/03 (2006.01); H04L 27/20 (2006.01); H04L 27/36 (2006.01)
CPC (source: EP US)
H03F 1/0222 (2013.01 - EP US); H03F 3/217 (2013.01 - EP US); H03F 3/24 (2013.01 - EP US); H04L 27/12 (2013.01 - EP US); H04L 27/2017 (2013.01 - EP US); H03F 2200/102 (2013.01 - EP US); H04L 25/03828 (2013.01 - EP US); H04L 27/361 (2013.01 - EP US)
Citation (search report)
- [A] US 2977417 A 19610328 - DOELZ MELVIN L, et al
- [A] GB 2165113 A 19860403 - SUNDSTRAND DATA CONTROL
- [A] AU 598811 B2 19900705 - MEGAPULSE INC
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2528292 A2 20121128; EP 2528292 A3 20140312; EP 2528292 B1 20150722; US 2012300870 A1 20121129; US 8355460 B2 20130115
DOCDB simple family (application)
EP 12168720 A 20120521; US 201113114392 A 20110524